LTC3261MPMSE#TR Equivalent & Substitute Parts

Part Overview

The LTC3261MPMSE#TR is a charge pump switching regulator IC manufactured by Analog Devices Inc. designed for power management applications. This device functions as a ratiometric regulator capable of generating positive or negative fixed output voltages (-Vin or Vin/2) from a single input supply. The part operates at a switching frequency of 500kHz and delivers up to 100mA output current across an input voltage range of 4.5V to 32V.

The LTC3261MPMSE#TR carries an obsolete product status. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support long-term production requirements for applications currently utilizing this component.

Substiute Parts

LTC3261MPMSE#TR

Analog Devices Inc.In Stock: 987LTC3261MPMSE#TR Datasheet

Current PartRFQ

LTC3261HMSE#TRPBF

Analog Devices Inc.In Stock: 780LTC3261HMSE#TRPBF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTC3261MPMSE#TR is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Ratiometric function with charge pump topology
• Positive or negative fixed output configuration
• Single output channel
• Input voltage range: 4.5V to 32V
• Output current capability: 100mA
• Switching frequency: 500kHz
• No synchronous rectifier implementation

Mechanical & Package Specifications:

• Surface mount technology
• 12-TSSOP package with 0.118" (3.00mm) width and exposed pad
• 12-MSOP-EP supplier device package designation

Environmental & Compliance:

• Moisture Sensitivity Level 1 (Unlimited)
• ECCN classification: EAR99
• HTSUS code: 8542.39.0001

Parts meeting all these criteria across electrical, mechanical, and environmental parameters are classified as direct substitutes. Variations in product status (active versus obsolete) and operating temperature range do not preclude substitution when all other parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

The LTC3261HMSE#TRPBF is a direct electrical and mechanical equivalent to the LTC3261MPMSE#TR. Both devices share identical specifications across all critical functional parameters: ratiometric charge pump topology, input voltage range (4.5V to 32V), output current (100mA), switching frequency (500kHz), and package configuration (12-TSSOP with exposed pad).

The primary distinction between these parts is product lifecycle status. The LTC3261MPMSE#TR is classified as obsolete, while the LTC3261HMSE#TRPBF maintains active product status from Analog Devices Inc. The substitute part additionally carries ROHS3 compliance and REACH unaffected certification, meeting current regulatory requirements for electronic components in regulated markets.

The operating temperature range differs between the two parts: the original part operates from -55°C to 150°C, while the substitute operates from -40°C to 150°C. This represents a narrower minimum temperature specification on the substitute. Applications requiring operation below -40°C ambient or junction temperature must evaluate this parameter against specific system requirements.

For new designs and production continuity, the LTC3261HMSE#TRPBF is the appropriate selection. The part is currently in active production with confirmed inventory availability and meets modern regulatory compliance standards.

Frequently Asked Questions (FAQ)

Q: Can the LTC3261HMSE#TRPBF be used as a direct replacement for the LTC3261MPMSE#TR in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent across all functional specifications. The substitute part shares identical input/output voltage ranges, output current capability, switching frequency, and package configuration. No circuit modifications are required for substitution.

Q: What is the significance of the different operating temperature ranges?

A: The LTC3261MPMSE#TR operates from -55°C to 150°C junction temperature, while the LTC3261HMSE#TRPBF operates from -40°C to 150°C. If your application requires operation below -40°C, the original part specification must be maintained. For standard industrial and commercial temperature ranges, the substitute part is fully compatible.

Q: Why does the substitute part have ROHS3 and REACH certifications while the original does not?

A: The LTC3261MPMSE#TR is an obsolete product, and compliance documentation may not be current or available. The LTC3261HMSE#TRPBF is an active product manufactured to current regulatory standards. These certifications confirm the substitute part meets environmental and hazardous substance restrictions applicable to modern electronics manufacturing and distribution.

Q: Are there any differences in packaging or tape & reel specifications?

A: Both parts use the 12-TSSOP package with 0.118" (3.00mm) width and exposed pad. The LTC3261HMSE#TRPBF is supplied in Tape & Reel (TR) format, which is standard for high-volume production. The package footprint and pin configuration are identical, ensuring PCB compatibility without layout modifications.

Q: What inventory considerations should be evaluated?

A: The LTC3261MPMSE#TR has 890 pieces in stock as an obsolete part. The LTC3261HMSE#TRPBF has 686 pieces in stock as an active product with ongoing manufacturing support. For long-term supply chain planning, the active substitute part provides greater assurance of continued availability and future replenishment.

Q: Are there any application-specific limitations when using the substitute part?

A: No application-specific limitations exist. The substitute part maintains full functional equivalence across all electrical parameters: ratiometric charge pump operation, fixed output voltage generation (-Vin or Vin/2), 100mA output current, and 500kHz switching frequency. Circuit performance and behavior remain identical to the original part.